<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<meta http-equiv="X-UA-Compatible" content="IE=edge" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>Document</title>
	</head>
	<body>
		<div id="app">
			当前计数: {{counter}} <br />
			<button @click="increment">+1</button>
			<button @click="decrement">-1</button>
			<button @click="test">test</button>
		</div>

		<script src="./js/vue.js"></script>
		<script>
			const app = Vue.createApp({
				data() {
					return {
						counter: 0,
					}
				},
				methods: {
					increment() {
						this.counter++
					},
					decrement() {
						this.counter--
					},
					test: () => {
						console.log('this', this)
					},
				},
			})

			app.mount('#app')
		</script>
	</body>
</html>
